CVE-2026-8889

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-03. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Version 3.0.7 of the Securly Chrome Extension uses deprecated SHA-1 hashing for IWF CSAM URL matching (25,020 hashes) and CIPA blocklist matching (12,352 hashes).

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
16.1%
KEV
Not listed

Published

June 3, 2026

Last Modified

June 10, 2026

Advisory Details (1)

Auto-updated Jun 10, 2026
No patch confirmed yet. Sources: cert.
cert

VU#595768 - Securly Chrome Extension contains multiple weak encryption and access control vulnerabilities

https://kb.cert.org/vuls/id/595768

Vendor Advisories for CVE-2026-8889(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 15× in last 7d / 103× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 134 total refreshes for this CVE.

  1. 2026-07-12 01:29 UTCEG score recompute
  2. 2026-07-12 01:29 UTCGHSA enrichment
  3. 2026-07-11 12:36 UTCEG score recompute
  4. 2026-07-11 12:36 UTCGHSA enrichment
  5. 2026-07-11 08:27 UTCEPSS rescore
  6. 2026-07-09 19:10 UTCEPSS rescore
  7. 2026-07-09 06:44 UTCEG score recompute
  8. 2026-07-09 06:44 UTCGHSA enrichment
  9. 2026-07-08 16:21 UTCEG score recompute
  10. 2026-07-08 16:21 UTCGHSA enrichment
  11. 2026-07-08 15:16 UTCEPSS rescore
  12. 2026-07-07 13:46 UTCEPSS rescore
  13. 2026-07-06 16:27 UTCEPSS rescore
  14. 2026-07-06 02:23 UTCEPSS rescore
  15. 2026-07-06 02:23 UTCEPSS rescore
  16. 2026-07-05 02:31 UTCEPSS rescore
  17. 2026-07-05 02:30 UTCEPSS rescore
  18. 2026-07-03 19:41 UTCEG score recompute
  19. 2026-07-03 19:41 UTCGHSA enrichment
  20. 2026-07-03 02:22 UTCEG score recompute
  21. 2026-07-03 02:22 UTCGHSA enrichment
  22. 2026-07-02 12:39 UTCEG score recompute
  23. 2026-07-02 12:39 UTCGHSA enrichment
  24. 2026-07-01 23:46 UTCEG score recompute
  25. 2026-07-01 23:46 UTCGHSA enrichment
Show 75 more
  1. 2026-07-01 15:07 UTCEPSS rescore
  2. 2026-07-01 10:47 UTCEG score recompute
  3. 2026-07-01 10:47 UTCGHSA enrichment
  4. 2026-06-30 23:22 UTCEPSS rescore
  5. 2026-06-30 21:54 UTCEG score recompute
  6. 2026-06-30 21:54 UTCGHSA enrichment
  7. 2026-06-29 23:40 UTCEG score recompute
  8. 2026-06-29 23:40 UTCGHSA enrichment
  9. 2026-06-29 14:06 UTCEPSS rescore
  10. 2026-06-29 10:47 UTCEG score recompute
  11. 2026-06-29 10:47 UTCGHSA enrichment
  12. 2026-06-28 18:47 UTCEG score recompute
  13. 2026-06-28 18:47 UTCGHSA enrichment
  14. 2026-06-28 14:07 UTCEPSS rescore
  15. 2026-06-28 05:54 UTCEG score recompute
  16. 2026-06-28 05:54 UTCGHSA enrichment
  17. 2026-06-28 04:56 UTCEPSS rescore
  18. 2026-06-27 17:03 UTCEG score recompute
  19. 2026-06-27 17:03 UTCGHSA enrichment
  20. 2026-06-27 04:05 UTCEG score recompute
  21. 2026-06-27 04:05 UTCGHSA enrichment
  22. 2026-06-27 03:08 UTCEPSS rescore
  23. 2026-06-26 15:12 UTCEG score recompute
  24. 2026-06-26 15:12 UTCGHSA enrichment
  25. 2026-06-26 01:21 UTCEG score recompute
  26. 2026-06-26 01:21 UTCGHSA enrichment
  27. 2026-06-25 13:50 UTCEPSS rescore
  28. 2026-06-25 11:11 UTCEG score recompute
  29. 2026-06-25 11:10 UTCGHSA enrichment
  30. 2026-06-24 22:16 UTCEG score recompute
  31. 2026-06-24 22:16 UTCGHSA enrichment
  32. 2026-06-24 14:05 UTCEPSS rescore
  33. 2026-06-24 09:19 UTCEG score recompute
  34. 2026-06-24 09:18 UTCGHSA enrichment
  35. 2026-06-23 21:33 UTCEPSS rescore
  36. 2026-06-23 19:00 UTCEG score recompute
  37. 2026-06-23 19:00 UTCGHSA enrichment
  38. 2026-06-22 14:25 UTCEPSS rescore
  39. 2026-06-21 14:56 UTCEPSS rescore
  40. 2026-06-21 01:59 UTCEPSS rescore
  41. 2026-06-20 12:31 UTCEG score recompute
  42. 2026-06-20 12:31 UTCGHSA enrichment
  43. 2026-06-19 20:34 UTCEG score recompute
  44. 2026-06-19 20:34 UTCGHSA enrichment
  45. 2026-06-19 19:26 UTCEPSS rescore
  46. 2026-06-18 17:52 UTCEPSS rescore
  47. 2026-06-18 16:30 UTCEG score recompute
  48. 2026-06-18 16:30 UTCGHSA enrichment
  49. 2026-06-18 01:16 UTCEG score recompute
  50. 2026-06-18 01:16 UTCGHSA enrichment
  51. 2026-06-17 17:53 UTCEPSS rescore
  52. 2026-06-17 11:39 UTCEG score recompute
  53. 2026-06-17 11:39 UTCGHSA enrichment
  54. 2026-06-16 22:47 UTCEG score recompute
  55. 2026-06-16 22:47 UTCGHSA enrichment
  56. 2026-06-16 17:53 UTCEPSS rescore
  57. 2026-06-16 09:55 UTCEG score recompute
  58. 2026-06-16 09:55 UTCGHSA enrichment
  59. 2026-06-15 21:03 UTCEG score recompute
  60. 2026-06-15 21:03 UTCGHSA enrichment
  61. 2026-06-15 17:49 UTCEPSS rescore
  62. 2026-06-15 17:49 UTCEPSS rescore
  63. 2026-06-15 07:55 UTCEG score recompute
  64. 2026-06-15 07:55 UTCGHSA enrichment
  65. 2026-06-14 23:18 UTCEPSS rescore
  66. 2026-06-14 19:03 UTCEG score recompute
  67. 2026-06-14 19:02 UTCGHSA enrichment
  68. 2026-06-14 06:10 UTCEG score recompute
  69. 2026-06-14 06:09 UTCGHSA enrichment
  70. 2026-06-13 23:00 UTCEPSS rescore
  71. 2026-06-13 17:15 UTCEG score recompute
  72. 2026-06-13 17:15 UTCGHSA enrichment
  73. 2026-06-13 03:46 UTCEG score recompute
  74. 2026-06-13 03:46 UTCGHSA enrichment
  75. 2026-06-12 23:12 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-8889?
CVE-2026-8889 is a high vulnerability published on June 3, 2026. Version 3.0.7 of the Securly Chrome Extension uses deprecated SHA-1 hashing for IWF CSAM URL matching (25,020 hashes) and CIPA blocklist matching (12,352 hashes).
When was CVE-2026-8889 disclosed?
CVE-2026-8889 was first published in the National Vulnerability Database on June 3, 2026, with the most recent update on June 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8889 actively exploited?
CVE-2026-8889 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 16.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8889?
CVE-2026-8889 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-8889?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8889, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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